ELIZABETHTON — In two unrelated cases, the Carter County Sheriff's Department will be charging a 13-year-old with the BB-gun shooting death of a 4-year-old and a county woman has been arrested on charges related to severe sexual and child abuse.

Sheriff Chris Mathes will be holding a press conference today at 2 p.m. to provide details of the unrelated cases.

The 13-year-old has been charged in the death of Coty Cox on July 2. Investigators said the boys, along with a 10-year-old brother, had been left alone at a mobile home at 340 Lovers Lane by Cox's mother.